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Northwest Africa 8504
Basic information Name: Northwest Africa 8504
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8504
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 140 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CK6
Recommended:  CK6    [explanation]

This is 1 of 56 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 14 Sep 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8504 (NWA 8504)

(Northwest Africa)

Purchased: 2013

Classification: Carbonaceous chondrite (CK6)

Petrography: The meteorite is dominated by a fine-grained greenish matrix that shows some brownish staining; few poorly defined chondrules are present. Olivine, Ca-pyroxene and feldspar are the most abundant silicates. Opaques include Cr-rich magnetite and troilite.

Geochemistry: Cr2O3 in magnetite: about 4.5 wt%

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2013
Mass (g):140
Pieces:1
Class:CK6
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):31.5±0.1 (31.3-31.7, n=15)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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